first, too chris lawrence at the pentagon. the turkish government says it does have more sense of who the attacker was. >> yeah, erin, they think it's a man ichevich sham li, member of the revolution people's liberation party. they say he trained in europe how to make bombs and has attacked turkish military and police officials before. right now they're doing dna tests to confirm his i. dix. the group is a throwback to the cold war, a far left revolutionary group that wants to overthrow turkey's government and establish some sort of communist state. >> why would they target the u.s. embassy? >> they are anti-capitalist. and they're very, very opposed to the u.s. and nato. analysts say probably two reasons for this attack. one is to embarrass the turkish government. two is to protest the presence of u.s. patriot missiles on turkish soil. right now, 400 american troops are in turkey and they are moving that patriot missile battery into position on turkey's border with syria. turkey requested that help because of the mortars flyi